Z-copy Voltage Controlled Current Follower Differential Input Transconductance Amplifier in Controllable Biquadratic Band-Pass Filter

This paper presents a single current difference transconductance amplifier (CDTA) based all-pass current mode filter. The proposed configuration makes use of a grounded capacitor which makes it suitable for IC implementation. Its input impedance is low and output impedance is high, hence suitable for cascading. The circuit does not use any matching constraint. The nonideality analysis of the circuit is also given. Two applications, namely, a quadrature oscillator and a highQband pass filter are developed with the proposed circuit. The functionality of the circuit is verified with SPICE simulation using 0.35 μm TSMC CMOS technology parameters.

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A fully-differential input amplifier with band-pass filter for biosensors

2014 IEEE International Symposium on Circuits and Systems (ISCAS) ◽

10.1109/iscas.2014.6865055 ◽

2014 ◽

Cited By ~ 2

Author(s):

Xin Meng ◽

Wei Li ◽

Gabor C. Temes

Keyword(s):

Band Pass Filter ◽

Pass Filter ◽

Differential Input ◽

Fully Differential ◽

Input Amplifier ◽

Band Pass

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ANALYSIS OF OPERATIONAL TRANSCONDUCTANCE AMPLIFIER FOR APPLICATION IN GHz FREQUENCY RANGE

International Journal of High Speed Electronics and Systems ◽

10.1142/s0129156404002685 ◽

2004 ◽

Vol 14 (03) ◽

pp. 690-695

Author(s):

A. GHORI ◽

P. GHOSH

Keyword(s):

High Frequency ◽

Current Mode ◽

Silicon On Insulator ◽

Center Frequency ◽

Band Pass Filter ◽

Operational Transconductance Amplifier ◽

Frequency Range ◽

Pass Filter ◽

Transconductance Amplifier ◽

Band Pass

Operational Transconductance Amplifier (OTA) is an excellent current mode device suited very well for VLSI implementation. In this contribution we report realization of OTA using Silicon-On-Insulator (SOI) structure based MOSFETs and compared them to OTA designed with bulk MOSFET. SOI based OTA outperformed bulk MOSFET OTA giving close to 10 GHz improvement in high frequency f T . A band-pass filter was implemented with SOI based OTA with a center frequency of 7 GHz and a bandwidth of 480 kHz.

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The Design of High-Frequency OTA-C Filter for Wireless Sensors Network Applications

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.562-565.668 ◽

2013 ◽

Vol 562-565 ◽

pp. 668-673

Author(s):

Zhi Qiang Gao ◽

Wei Zheng ◽

Liang Yin ◽

Xiao Wei Liu

Keyword(s):

High Frequency ◽

Automatic Tuning ◽

Center Frequency ◽

Cmos Process ◽

Band Pass Filter ◽

Pass Filter ◽

Network Applications ◽

Transconductance Amplifier ◽

Band Pass ◽

On Chip

The paper is presented the design of high-frequency OTA-C band-pass filter with on-chip automatic tuning. In this design, the linear operational transconductance amplifier (OTA) is proposed based on fully complementary differential pairs with source degneration, and achieves both low-distortion figures and high-frequency operation. The matching design between the master filter and the slave filter is also given, and the non-ideality effect of the OTA-C filters with on-chip automatic tuning is discussed. The whole circuit is designed using TSMC 0.18μm 1.8V CMOS process and post-simulation results show the center frequency of filter is 105MHz with relative error of 0.4%, when the process corner varies between SS, TT, FF, and the temperature from-20 to 120°C.

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